Following icons havent been updated:-

• (duplicate) standard/core/1352962034/docs http://www.uploadscreenshot.com/image/1649266/403377 (system environment check page) - Fixed in MDL-36564 (CSS fixed in this one)
• (duplicate) standard/core/1352962034/i/cohort (categories listing page) http://www.uploadscreenshot.com/image/1649260/6672748 - Fixed in MDL-36622
• (duplicate) Guest access icon / Self enrollement icons http://www.uploadscreenshot.com/image/1649263/6720153 - Fixed in MDL-36623
• (deferred) Marking guide icon + Rubric icon http://www.uploadscreenshot.com/image/1649271/415358 - Will be taken care of in MDL-36766
• (won't fix) All repo icons on /moodle/admin/plugins.php are pngs http://www.uploadscreenshot.com/image/1649293/3399331 - Won't fix
• (won't fix) All tiny mce related icons in above page are pngs http://www.uploadscreenshot.com/image/1649303/2128317 - Won't fix
• Not unlockable action icon (t/unblock_gray.gif) http://www.uploadscreenshot.com/image/1649313/5034957 - Using lock icon.
• Open lock icon http://www.uploadscreenshot.com/image/1649325/5390605 - Using lock icon, 12x12
• (duplicate) Backup restore icon http://www.uploadscreenshot.com/image/1649364/501813 - Fixed in MDL-36622
• (deferred) course icons - Remote course icon (I have no idea why we use moodle logo for this) http://www.uploadscreenshot.com/image/1649431/1046916 (Will be taken care of in MDL-36765)

This issue also takes care of renaming some icons in code and adapting CSS in Administration.